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Video Conferencing Ppt

Date post:07-May-2015
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  • 1.WHAT IS VIDEO CONFERENCING??? Video conferencing is simply a vehicle for interactivecommunication. enables one set of people to see and hearpeople in a different location. in its most basic form is the transmission ofimage (video) and speech (audio) back andforth between two or more physicallyseparate locations. Also known as Videoteleconference.

2. BASIC FEATURES Verystraightforward approach. Callscan be made locally, nationally or across the world. 3. GUESS IT!!!!!!! 4. VIDEO CONFERENCING COMPONENTS Camera Microphone Speakers TV or Monitor 5. CAMERA To capture & send video during video conferencing.MICROPHONE To capture & send audio during videoconferencing. 6. SPEAKERS To play the audio received during video conferencing.MONITOR To display the video received during videoconferencing. 7. ADDITIONAL REQUIREMENT CODEC Codec- COder-DECoder( COmpressor-DECompressor )- makes the audio/videodata "small enough" to be practical forsending over expensive networkconnections. A codec takes analog signals, compressesand digitizes them, and transmits the signalsover digital phone lines. 8. CODEC Compression rates of up to 1:500 can be achieved. Theresulting digital stream of 1s and 0s is subdivided into labeled packets, which are then transmitted through a digital network. 9. VIDEOCONFERENCING SYSTEMS Dedicated systems have all required components packaged intoa single piece of equipment. usually a console with a high quality remotecontrolled video camera. Desktopsystems are add-ons to normal PCs, transformingthem into videoconferencing devices. 10. Dedicatedsystems Large group videoconferencing: non- portable, large, more expensive devices used for large rooms and auditoriums. Small group videoconferencing: non- portable or portable, smaller, less expensive devices used for small meeting rooms. Individual videoconferencing: usually portable devices, meant for single users, have fixed cameras, microphones and loudspeakers integrated into the console. 11. VIDEOCONFERENCING TYPES Point-to-point A videoconference that connects two locations. Each site sees and hears the other sites at all times 12. VIDEOCONFERENCING TYPES Multi-pointA videoconference that connects to more than two sites through the use of a multi-point control unit( MCU ) or video hub. Participantsat all sites can hear one another at all times and see the site that is currently speaking.( Voice activated switching) This is a bridge that interconnects calls from several sources. 13. QUIZ TIMEA polycom is: A) one of those geometric atrocities whose angles add up to heck of a lot more than the sum of its sides. B) A tame parrot (Polycalm, get it?). C) A triangular representation of the USS Starship. D) None of the above. 14. Polycom is the market leader in endpoint voice and video communications. 15. USES Business E-Meetings 16. USES E-Learning Presentations 17. USES Chatting with friend 18. USES Family talk 19. USES Telemedicine Transmission of medical images Diagnosing & consulting 20. USES Videoconferencing in my hand 21. ADVANTAGES Student learning is impacted in several ways: Enhances student motivation. Is exciting or different, catches the studentsattention. Connects with the real world. Promotes student retention and learning. Accesses information from primarysources. Accommodates many learning styles. 22. ADVANTAGES Students have the opportunity to interact withthe experts in a particular field of study. Videoconferencing accommodates a variety ofdifferent learning styles through severalmodalities. Videos Animations Audio Graphics Collaboration 23. ADVANTAGES Videoconferencing affords students theopportunity to develop and improve variouscommunication skills. Presentation and speaking skills. Communication and management skills. Questioning and interviewing skills. 24. ADVANTAGES Use of sign language communications fordeaf, hard-of-hearing and mute Can improve work quality Reduce costs Improves communication Groups can meet more frequently Critical meetings can be conducted in less time More faculty and staff can be involved 25. LIMITATIONS Initial cost of the equipment is high. Ghost/Blurred images seen when rapid movementoccurs : Wear neutral, solid colors. Avoid checks and stripes. Avoid white and shades of red. Red is not codec-friendly. Use plain background. Avoid glass in the background. Audio echo effect seen when system is notproperly installed : Switch OFF microphone when not in use.

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